20266870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 21536906

約数列:

[1, 2, 5, 10, 13, 26, 31, 47, 62, 65, 94, 107, 130, 155, 214, 235, 310, 403, 470, 535, 611, 806, 1070, 1222, 1391, 1457, 2015, 2782, 2914, 3055, 3317, 4030, 5029, 6110, 6634, 6955, 7285, 10058, 13910, 14570, 16585, 18941, 25145, 33170, 37882, 43121, 50290, 65377, 86242, 94705, 130754, 155899, 189410, 215605, 311798, 326885, 431210, 653770, 779495, 1558990, 2026687, 4053374, 10133435, 20266870]

約数ペア:

[(1, 20266870), (2, 10133435), (5, 4053374), (10, 2026687), (13, 1558990), (26, 779495), (31, 653770), (47, 431210), (62, 326885), (65, 311798), (94, 215605), (107, 189410), (130, 155899), (155, 130754), (214, 94705), (235, 86242), (310, 65377), (403, 50290), (470, 43121), (535, 37882), (611, 33170), (806, 25145), (1070, 18941), (1222, 16585), (1391, 14570), (1457, 13910), (2015, 10058), (2782, 7285), (2914, 6955), (3055, 6634), (3317, 6110), (4030, 5029)]